Rotary pump



June 28 19322. w. L... CLAYPOOL ROTARY PUMP 5 Sheets$heet Filed March 18, 1950 INVENTOR M BY ATTORNEYS 0 June 28, 1932. W, L CLAYPOOL 1,865,396

' ROTARY PUMP Filed March 18, 1930 s Sheets-Sheet 2 "III/I A Fi 9- 5.

INVENTOR June 28, 1932. w. L. CLAYPOOL 1,855,396

ROTARY PUMP Filed March 18, 1930 3 Sheets-Sheet 5 lNVENTOR ATTORNEYS Fatentecl June 28, 1932 UNITED STATES WALLACE L. cLAYrooL, or navnn'ron'r,

IOWA, .ASSIGNOR TO 'WESTCO-CHIPPEWA PUMP COMPANY, OF DAVENPORT, IOWA, A CORPORATION OF DELAWARE EOEEARY purer Application filed March 18, 1980. Serial No. 436,732.

This invention relates to rotary pumps and more particularly to pumps comprising a rotor having a liquid impelling means such as a plurality of marginal buckets operating in a liquid passage.

One of the objects of the present invention is to provide simple and effective means for priming a pump of the rotary type having a pressure building chamber and a rotor operable therein.

Another object is to provide a rotary pump with means which will prevent interruptions in the operation of the pump such as the losing of its prime.

Another object is to provide a rotary pump in combination with a pressure supply system in which the supply tank has a connection independently of the discharge outlet with the liquid passage of the pump to maintain the pump in primed condition, while the pump is in operation.

A further object is to provide a rotary pump of the type having a rotor which operates in a substantially closed liquid passage with priming means so arranged that priming liquid may be admitted at the bases of the rotor buckets, whereby such liquid may be utilized to maintain the pump in primed condition while in operation.

With the foregoing and other objects in view. which will be apparent from the detailed description to follow, this invention consists in certain novel features of construction and combinations of parts which will be readily understood by those skilled in the art to which the invention appertains.

ln'the accompanying drawings which illustrate suitable embodiments of the present invention, I

Figure 1 is an elevation of a liquid pressure supply system showing the supply tank and the rotary pump for supplying liquid to the tank.

Fig. 2 is a fragmentary elevation of the lower portion of the supply tank taken substantially 90 degrees to Fig. 1 showing the end elevation of the rotary pump and showing the priming connection between the tank and pump.

Fig. 3 is an enlarged fragmentary section taken substantially on the line H of Fig. 2.

Fig. 5 is an enlarged section taken substantially-on the line 55' of Fig- 3, showing the connections or the priming conduits with the casing sections.

Fig. 6 is an elevation of an optional fluid pressure supply system wherein the means for priming the rotary pump admits priming fluid to the pump casing radially inwardly of the fluid passage therein.

Fig. 7 is an enlarged view of one of the casing sections of Fig. 6 showing the rotor mounted therein.

Fig. 8 is a section taken substantially on the line 8-8 of Fig. 7 to show the connections of the priming conduits.

Referring to the drawings, in which like numerals refer to like parts throughout the several views, the casing body 1, supporting base 2, and a shaft supporting bracket 3 are cast integrally. The casing l is saucershaped and has a peripheral rim 4: having a fiat peripheral side face 5, and an internal peripheral channel 6 which forms the fluid passage, the outer wall of which may be formed by a radially ext/ending rib 7, the rib 7 having a cylindrical inner edge. The web 1 portionof the casing body has upon the inner face thereof a relatively low annular rib 8 concentric with the rim 4. The casing body 1 has an axial integral tubular boss 9 on the outer side thereof, and the bracket 3 has a bearing aperture in axial alignment with the boss 9.

The casing cover 10 is formed with an axial integral tubular boss ll in axial alignment with the boss 9 of the casing 1 and with an integral shaft supporting bracket 12 having a bearing aperture at its outer end in axial alignment with the boss 11. The casing cover 10 also has its inner face circumferentially rabbeted to provide a cylindrical shoulder 13 to fit within the cylindrical inner edge of the rib 7 and a fiat peripheral portion M- to ab y provided with registering grooves which p form an annular packing chamber for receiving an annular packing member 16, so that an effective water-tight seal is provided between the casing body and cover. The casing body and cover are securely held together i u in assembled relation by ineansof suitable bolts or cap screws 17. A

A shaft 19 is journaled axially in the casing body and cover and in bearing members mounted in the bearing apertures of the brackets 3 and 12. Suitable packing gland nuts 22 surrounding the shaft 19 and extending into the tubular bosses 9 and 11 are provided to prevent the escape of the liquid from the interior of the pump body. The portions 21 of the bosses 9 and 11 forming the abutments for the packing has a slight working clearance only with the shaft so as to prevent the packing from being forced into the pump.

casing body 1 and comprises a circular disk having a hub 18, web 23 and an outer peripheral portion 24 upon the outer edges of which the impeller ribs 25 are formed. The annular portion 24 of the rotor has a close working fit between the annular ribs 8 and of the casing body 1, and easing cover 10, whereby the annular liquid passage 6 is substantially out off from the central portion of thecasing.

As shown in Fig. 3, the impeller ribs extend laterally from the portion 24 and lie within the liquid passage 6. The impeller ribs 25 are formed at both sides of the peripheral edge of the rotor to form suitable buckets, the side edges of which are spaced from the side walls of the passage 6 and the peripheral edges of which are spaced from the circumferential wall of the passage 6.

The casing body 1 is provided with outlet and inlet portions 26 and 27, respectively, which communicate substantially tangentially with the liquid passage 6. An abutment 28 is positioned in the liquid passage 6 be tween the outlet 26 and inlet 27 and has a close working fit with the sides of the rotor ribs 25 and is provided with a shoulder portion 29 which also has a close working fit with 0 the peripheral edges of the rotor ribs 25 so that the liquid being pumped will be deflected from the liquid passage 6 into the outlet 26.

The cover portion 10 is provided with an outwardly extending radial continuation of the 65 annular rib 15 to correspond with the abut- The rotor for the pump is mounted within the ment 28, which also has a close working fit with the adjacent side of the rotor ribs 25.

The rota pump just described is mounted upon a suita le base 30 and is driven by means of any rime mover, such as the electric motor 31, t e shaft 32 of which is in axial align ment with the shaft 19 of the pump and connected thereto by means of a suitable couling 33.

The outlet 26 of the casing body 1 is connected through a conduit 34 to the bottom of the ressure supply tank 35. The inlet 27 of t e pump is connected to a conduit 36 which leads to the well from which the liquid is to be pumped and the conduit 36 is provided with a suitable check valve 37 which prevents the flow of liquid from the pump back throu h the conduit 36. The supply tank 35 is of t e ressure type and is'provided with a suitab e pressure responsive switch 38 which is connected to the motor 31 so that when the pressure within the tank reaches a predetermined amount, the pressure responsive switch 38 will close the electric circuit and start the motor and pum in operation.

The pum is primed while in operation by a means in ependent of the liquid discharge outlet, which will now be described. This means is so arranged that fluid in the supply tank is conducted back to the liquid passage 6 of the pump casing at the discharge si e thereof immediately adjacent the stop means. A portion of the returned liquid enters the rotor buckets just as they are about to pass the stop means and is carried past the stop means to the inlet side of the liquid passage, so that it can be utilized to prime the pump in case the operation thereof is interrupted. The most eificient operation is provided by admitting the liquid substantially normal to the plane of the motor and at the bases of the buckets. It is to be understood, however, that the priming fluid may be admitted at an angle to the rotor and at any point adjacent the stop means.

A' threaded opening 39 is formed in each side wall of the pump easing into which a suitable conduit 40 is threaded. The conduits extend upwardly to the bottom of the supply tank 35 and are secured thereto to receive liquid from the tank. As shown in Figs. 3 and 5, the openings 39 communicate with the fluid passage 6 at the inner side thereof immediately adjacent the connection of, the stop means shoulders 29 with the ribs 8 and 15 of the body and cover portions, respectively, of the casing. The openings 39 are preferably partially formed in these connections so that the priming liquid will enter the buckets just as the impeller ribs are about to engage the shoulders 29 of the stop means 28.

While the pump is-in operation the priming liquid is conducted from the supply tank 35 through the conduits 40 to the bottoms of the rotor buckets 25 and because of the fact that the primin liquid enters these buckets immediately sdgecent the stop means 28 and shoulders 29 thereof, e portion of the iiquid isretained Within the buckets Whiie traveling post the shouider portion 29 to the iniet side of the liquid passage 6 and may be etiectiveiy utilized to prime the pump.

in the cases Where pump ioses its prime, either While idle or in operation, the rotor buckets when the rotor is operst s; trep pockets oi sir between siugs of and end oiso gather sir with the iiquid in the form of e mist and emuision. This mixture of stir and iiquid is discherged st the outiet by dispiocexnent oi the iiquid entering through the conduits t from the use. 35, thus reiiiiing the rotor buckets es post the stop means. The rotor buckets thus maintain the iiquid pesss e ti i'uii of iiquid to prevent the pump from only.

n the psrticoier construction shown in gs. l and 2, the bottom of the s y tank is positioned shove the bump outlet the iiou d d the pump into the bottom c Figs. 6, 7 and 8, s siightiy modified construction shown to comprise s. into which the iiquid is discherged throng 1 thereof. The casing body end cover ortion oi the pump ere substentieiiy the s .e con struction as the pump described in connection with 3 to 5, need not dep the outiet i and the pressure suppiy 22,

with o stendpipe 76, so thet e sub I qusntity of iiquid is retained chamber 50. This iiquid i provided with condo stentieiiy from the bot-.1 pump ceasing body These conduits enter in o 5% and the cover 57, respectiveiy, "formed sage seeiing ribs 58 59 pro casing body cover, The sea provided with passages ti" 1 of the purnp ire-medic deflecting stop mes-n" nect the iiquid pods ber 63 provided at ribs 58 end 59, The connected to the hub 65 s narrow her ing 66 extending trensverseigr i hich is provided s transverse or peddie portion 6'?) id hen the pumpis in operetion, ii within the fluid receiving chamber 5G is onducted therefrom through the conduit 53 to the chamber 63 redieiiy inwsrdiy oi the seeiing ribs 38 end 59. The liquid discharged into this chamber 63 is set in centrifugal inotier. by means of the paddles 67 form on iy of said passage, end a. second int the spokes 66 of the rotor, and is discharged through the posseges 60 at the sides of the rotor buckets. Since these pessoges are formed in the ribs 58 and 59 adjacent the deflecting portion 61 of the pump, the Liquid Wiii be iced into the bottoms of the rotor buckets and will be carried past the stop means $1 to the inlet side oi the pump, whereby the horrid will provide effective menus for priming the I pump.

it is to be understood that the conduits 51 may, if desired, be led to discharge directiy into the liquid passage, as in the previousiy described construction shown in Figs. 1 to 5.

In each of the constructions described, u w separate means independent oi the discharge outlet is provided for admitting; liquid to the buckets, preferebiy the bottom thereof, and sdjacent the stop means, so that the iiquid is directed into the rotor buckets end 3 carried thereby post the stop means to'the iniet side of the iiquid pessege. This iiquid is utilized in priming the pump when the operation thereof is interrupted.

The present invention provides s Very setisiectory and efficient seif-priming means for rotary pumps of the type described,

Furthermore, it is to be understood that the particular forms of eppsretus shown and described, and the particuior procedure set forth, are presented for purposes of ex pienstion and iiiustrstion end that various modificeetions of said apparatus and proce dure can be made Without deporting from my invention defined in the appended cieiins.

Vfhat I cieini is:

i. In s rotary pump, at casing, a pressure deveioping passage in said casing having en iniet and on outiet, stop means between seid iniet and outiet for directing fluid into said outiet, a rotor hearing nisrginei rotor buckets, said rotor end casing being seeied to prevent substsntiei leakage of iiquid rcdiniiy WerdLy 01% said o sscge, and at second i independent 0 discharge outiet cor nonicoting with said said second iniet being so positioned as to permit the entrance of iiquid to said buckets, whereby seid iiquid may be carried pest ssid stop means to the Me 2. in e rotary pump, at casing, at pressure deveioping; pessege in send casing hev mist and outiet, stop betwee sold iniet and outlet for directing fluid into said ontiet, e rotor her ing -urginei r buckets, sold rotor and casing being sealed 0 prevent si s, 511s}; AAA-2i 1 usouostwn is so ago ti iiqui iodienyiii et pendent of said outiet in seid casing giacent said outlet, said iniet being so tioned as to admit printing fluid to the buses of said buckets, whereby said liquid be csrried past said stop menus to the inlet side of seid passage.

3. In a rotary pump, a casing, a pressure developing passage in said casing having an inlet and an outlet, stop means between said inlet and outlet for directing fluid into said outlet, a rotor having marginal rotor buckets, said rotor "and casing bein sealed to prevent substantial leakage liquid radially inwardly of said passage, and a second inlet independent of said outlet in said casing communlcating with said passage adjacent said outlet and being partially formed in said stop means whereby liquid is admitted to said buckets and carried past said stop means to the inlet side of said passage.

4. In a rotary pump, a casing, a pressure developing passage in said casing having an inlet and an outlet, stop means between said inlet and outlet for directing fluid into said outlet, a rotor having marginal rotor buckets, said rotor and easing being sealed to prevent substantial leakage of liquid radially inwardly of said passage, and a second inlet in said casing independent of said outlet communicating with said passage adjacent said outlet and at the junction of said stop means with the inner wallof said passage to admit liquid to said buckets, whereby said liquid may be carried past said stop means to the inlet side of said passage.

5. In a rotary pump, a. casing, a pressure developing passage in said casing having an inlet and an outlet, stop means between said inlet and outlet for directing fluid into said outlet, a rotor having marginal rotor buckets, said rotor and easing being sealed to prevent substantial leakage of liquid radially inwardly of said passage, and a second inlet in said casing independent of said outlet communicating with said passage adjacent said outlet and immediately adjacent said stop means substantially normal to the plane of said rotor for admitting liquid to said buckets, wheieby said liquid may be carried past said stop means to the inlet side of said passage.

6. In a rotary pump, a casing, a pressure developing passage in said casing having inlet and outlet passageways, a stop means within said passage between said inlet and outlet passageways for directing liquid into said outlet, a rotor sealed with said casing radially inwardly of said passage to obviate leakage of liquid from said passage, said rotor having a series of radial marginal buckets at each side thereof, and secondary inlets at opposite sides of said casing communicating with said passage adjacent said outlet passageway, each of said secondary inlets being disposed to admit liquid toa series of buckets adjacent said stop means, whereby said liquid may be carried past said stop means to the inlet side of said passage.

7. In a rotary pump, a casing, a pressure developing passage in said casing having inlet and outlet passageways, a stop means within said passage between said inlet and outlet passageways for directing liquid into said outlet, a rotor sealed with said casing outlet passageway, each of said secondary inlets being partially formed in said stop means adjacent the bottoms of the rotor buckets, whereby liquid may be admitted thereto and carried thereby past said stop means to the inlet side of said passage.

8. In a rotary pump, a casing, a pressure developing passage in said casing having inlet and outlet passageways, a stop means within said passage between said inlet and outlet passageways for directing liquid into said outlet, a rotor sealed with said casing radially inwardly of said passage to obviate leakage of liquid from said passage, said rotor having a series of radial marginal buckets at each side thereof substantially normal to the plane of said rotor, and secondary inlets at opposite sides of said casing communicatingwith said passage adjacent said outlet passageway, each of said secondary inlets being disposed to admit liquid to the bottoms of said buckets immediately adjacent said stop means, whereby said liquid may be carried past said stop means by said buckets to the inlet side of said passage.

9. In a rotary pump, a casing, a pressure developing passage therein having an inlet and an outlet, a rotor for said passage sealed with said casing radially inwardly of said passage to obviate leakage of liquid from said passage, said rotor having a series of radial marginal buckets lying within said passage, the walls of said passage being radially and laterally spaced from said buckets, stop means between said inlet and outlet for directin g liquid into said outlet, said stop means engaging the periphery and opposite sides of said rotor with a running fit, and secondary inlets at opposite sides ofsaid casing communicating with said passage adjacent said outlet passageway, each of said secondary inlets being adjacent said stop means and adjacent the bottoms of the rotor buckets, whereby liquid may be admitted thereto and carried thereby past said stop means to the inlet side of said passage.

10. In a fluid pumping and storage supply system, the combination with a fluid storage.

a source of liquid supply, stop means between said inlet and outlet for directing liquid into said outlet and a rotor having marginal radial blades surrounded by said passage, and means for conducting liquid from said tank to said passage immediately adjacent said stop means at the dischar e side thereof, wh ereby the liquid returne from said tank may be admitted to said buckets and carriedthereby past said stop means to the inlet side of said passage to prime said pump. 11. In a rotary pump, a casing having a pressure developing passage therein, an inlet and outlet for said passage, stop means within said casing between said inlet and outlet for directing liquid into said outlet, a rotor having radial marginal buckets lying within said passage, said rotor being sealed at its sides with said casing radiall inwardly of said passage to obviate the leakage of liquid from said passage, a chamber in said casing radially inwardly of said passage, a passageway leading from said chamber to said passage at the discharge side of said passage immediately adjacent said stop means, means for admitting liquid to said chamber, and means on said rotor for discharging the liquid in said chamber into said passageway and into said buckets, whereby the liquid may be carried by said buckets past said step means to the inlet side of said passage.

12. In a rotary pump, a casing, a pressure developing passage in said casing having an inlet and an outlet, stop means between said inlet and outlet for directing fluid into said outlet, a rotor having marginal rotor buckets, said rotor and casing being sealed to. prevent substantial leakage of liquid radially inwardly of said passage, and a second inlet independent of the said outlet and inlet for said passage and communicating with the pressure discharge side of said passage for returning discharged liquid to said passage 7 to maintain said pump in primed condition,

In testimony whereof I aflix my signatum WALLACE L. CLAYPOOL. 

